Gt 350 Throttle body

[DrDane]

Curious if anyone has successfully used the 87mm GT350 TB and if there were any benefits over the stock unit. I'm sitting here thinking Im about to put my stock TB on a Holley Sniper (90mm opening) with Paxton and toque booster that I plan to spring up the gate to about 13-14lbs on e85. If it was worth any change in flow (10+)rwhp might be worth the $199, assuming its tunable.

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[ProChargerTECH]

Something to remember....

Roots/Screw blowers are WAY more picky about TB size (since it's on the inlet of the blower)....or a N/A car that is having to suck air into it.

On a Turbo or Centri there is little to no real gain on a TB if tubing in the system is 3" or so for the rest of the charge piping. Personally I haven't seen any gain other then dyno run error (heat soak, cam changes, timing changes) from run to run after doing a TB swap like that.

The intake will give you some results, as with the TQ booster.

But this is kinda like the guys in the GM world wanting 102 and 103mm TB's. Yet guys are making 1,600 wheel HP with the stock 90mm unit with no issues at all. ;)

 

[DrDane]

That was along the lines of what I had figured and thought it'd be something else to tune around. Thanks

 

[Burnin4]

Something to remember....

Roots/Screw blowers are WAY more picky about TB size (since it's on the inlet of the blower)....or a N/A car that is having to suck air into it.

On a Turbo or Centri there is little to no real gain on a TB if tubing in the system is 3" or so for the rest of the charge piping. Personally I haven't seen any gain other then dyno run error (heat soak, cam changes, timing changes) from run to run after doing a TB swap like that.

The intake will give you some results, as with the TQ booster.

But this is kinda like the guys in the GM world wanting 102 and 103mm TB's. Yet guys are making 1,600 wheel HP with the stock 90mm unit with no issues at all. ;)

Not to drift too far off topic, but do you have any insight/opinion/data on changing out a stock intake manifold for a GT350 manifold and using a stock tb? (S/c or turbo)

 

[ProChargerTECH]

Not to drift too far off topic, but do you have any insight/opinion/data on changing out a stock intake manifold for a GT350 manifold and using a stock tb? (S/c or turbo)

I haven't personally done one yet. (haven't really had a reason to)
My only experience tuning the GT350 intake, is when its been strapped to a GT350 ;) :cheers:

 

[Phoenix]

your stock throttle body will be fine unless you are tearing the motor apart. the sniper is a great manifold, but you will need some sort of adapter to put the stock throttle body on it. local guy is running a nitrous outlet plate system on his car and luckily that works fine mounting a stock throttle body to that.

 

[gameovergt]

I had my stock TB bored out and redone. No problems!

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